Regulatory Requirements

� RA 9275 Philippine Clean Water Act of 2004

� RA 3931 National Water and Air Pollution Control

Commission

� PD 984 Pollution Control Law (1976)

� 1978 Water Quality Standards

� DENR AO 34 and 35, Series of 1990

� RA 4850 Laguna Lake Development Authority

� LLDA Resolution 33, Environmental User Fee, 1996

DENR ADMINISTRATIVE ORDER

No. 34 (Series of 1990)

Revised Water Usage and

Classification/Water Quality Criteria

Amending Section Nos. 68 and 69, Chapter III

of the 1978 NPCC Rules and Regulations

Water Usage and Classification

Fresh Surface Waters (Rivers, Lakes, Reservoirs, etc.)

Classification Beneficial Use

Class AA Public Water Supply Class I

Class A Public Water Supply Class II

Class B Recreational Water Class I

Class C Fishery Water, Recreation Water Class II, Industrial

Water Supply Class 1

Class D For agriculture, irrigation, livestock watering

Industrial Water Supply II

Other inland water, by their quality, belong to this

classification

DENR ADMINISTRATIVE ORDER No. 35Series of 1990

Subject: Revised Effluent Regulations of 1990,Revising and Amending the EffluentRegulations of 1982

Title: Revised Effluent Regulations of 1990

Scope: Shall apply to all industrial and municipalwastewater effluents

Effectivity: March 1990

DENR ADMINISTRATIVE ORDER No. 35

Series of 1990

Heavy Metals and Toxic Substances

Industrial and other effluent when discharged into

bodies of water classified as Class A,B C, D, SA,

SB, SC and SD in accordance with Section 68 as

amended, of the 1978 NPCC Rules and Regulations

shall not contain toxic substances in levels greater

than those indicated in Table 1.

Table 1 - Effluent Standards: Toxic and Other Deleterious Substance (Maximum Limits for the Protection of Public Health) (a)

Parameter Unit Protected

Waters

Category I

(Class AA &

SA)

Protected

Waters

Category I

(Class A, B &

SB)

Inland Waters

Class C

Marine

Waters Class

SC

Marine

Waters Class

SD

Arsenic

Cadmium

Chromium

(Cr+6)

Cyanide

Lead

Mercury

(Total)

PCB

Formalde-

hyde

mg/l

mg/l

mg/l

mg/l

mg/l

mg/l

mg/l

mg/l

(b)

(b)

(b)

(b)

(b)

(b)

(b)

(b)

0.1

0.02

0.05

0.1

0.1

0.005

0.003

1.0

0.2

0.05

0.1

0.2

0.3

0.005

0.003

1.0

0.5

0.1

0.2

0.2

0.5

0.005

0.003

1.0

0.5

0.2

0.5

-

-

0.01

-

-

Note: (a) Except as otherwise indicated, all limiting values in Table (Sec. 4) are

maximum and shall not be exceeded. (b) Discharge of sewage and/or trade effluents

are prohibited or not allowed.

Table 2A - Effluent Standards: Conventional and Other Pollutants in Protected Waters Category I & II and in Inland Waters Class C (A)

Parameter Unit Protected

Waters

Category I

(Class AA &

SA)

Protected

Waters

Category I I

(Class A, B &

SB)

Inland Waters

Class C

Color

Temperature (Max.

rise)

pH (range)

COD

Settleable Solids (1 hr)

5-day 20oC BOD

Total Suspended Solids

Total Dissolved Solids

Surfactants (MBAS)

Oil/Grease

Phenolic Subtances

(Phenols)

Total Coliforms

PCU

OC

mg/l

mg/l

mg/l

mg/l

mg/l

mg/l

mg/l

mg/l

MPN/100ml

(b)

(b)

(b)

(b)

(b)

(b)

(b)

(b)

(b)

(b)

(b)

(b)

100

3

6.0-9.0

60

0.3

30

50

1,000

2.0

5.0

0.05

5,000

150 ©

3

6.0-9.0

100

0.5

50

70

-

5.0

5.0

0.1

10,000

Table 2B-Effluent Standards: Conventional and Other Pollutants inInland Waters Class D, Coastal Waters Class SC and SD andother Coastal Waters not yet Classified

Parameter Unit Inland Waters

(Class D)

Coastal Waters

(Class SC)

Class SD & Other

Coastal Waters Not

Classified

Color

Temperature (Max.

rise)

pH (range)

COD

5-day 20oC BOD

Total Suspended Solids

Total Dissolved Solids

Surfactants (MBAS)

Oil/Grease

Phenolic Subtances

(Phenols)

Total Coliforms

PCUOC

mg/l

mg/l

mg/l

mg/l

mg/l

mg/l

mg/l

MPN/100m

l

-

3

6.0-9.0

200

120

150

1,500(h)

-

-

-

(j)

( c )

3

6.0-9.0

200

100

150

-

10

10

0.05 (i)

-

( c )

3

5.0-9.0

200

120

(f)

-

-

15

1.0

-

Notes for Tables 2A and Table 2B

1. In cases where the background level of Total Dissolved

Solids (TDS) in freshwater rivers, lakes, reservoirs and

similar bodies of water is higher than the Water quality

Criteria, the discharge should not increase the level of TDS

in the receiving body of water by more than ten percent of

the background level.

2. The COD limits in Tables 2A and 2B generally apply to

domestic wastewater treatment plant effluent. For industrial

discharges, the effluent standards for COD should be on a

case to case basis considering the COD-BOD ratio after

treatment. In the interim period that this ration is not yet

established by each discharger, the BOD requirements shall

be enforced.

Notes for Tables 2A and Table 2B

3. There are no effluent standards for chloride except for

industries using brine and discharging into inland water, in

which case the chloride content should not 500 mg/l.

4. The effluent standards apply to industrial manufacturing

plants and municipal treatment plants discharging more than

thirty (30) cubic meters per day.

LEGEND for Tables 2A and Table 2B

(a) Except as otherwise indicated, all limiting values in Tables

2A and 2B are 90th percentile values. This is applicable only

when the discharger undertakes daily monitoring of its

effluent quality, otherwise, the numerical values in the tables

represent maximum values not to be exceeded once a year.

(b) Discharging of sewage and/or trade effluents is prohibited or

not allowed.

LEGEND for Tables 2A and Table 2B

(c) Discharge shall not cause abnormal discoloration in the

receiving waters outside of the mixing zone.

(d) For wastewater with initial BOD concentration over 1,000

mg/l but less than 3,000 mg/l, the limit may be exceeded up

to a maximum of 2000 mg/l or a treatment reduction of

ninety (90) percent, whichever is more strict. Applicable to

both old and new industries.

(e) The parameters Total Suspended Solids (TSS) should not

increase the TSS of the receiving water by more than thirty

(30%) percent during the dry season.

LEGEND for Tables 2A and Table 2B (cont…)

(f) Not more than 30 mg/l increase (dry season).

(g) Not more than 60 mg/l increase (dry season).

(h) If effluent is the sole source of supply for irrigation, the

maximum limits are 1,500 mg/l and 1,000 mg/l,

respectively, for old industries and new industries.

(j) If effluent is used to irrigate vegetable and fruit crops which

may be eaten raw, Fecal Coliforms should be less than 500

MPN/100 ml.

DENR ADMINISTRATIVE ORDER No. 35

Series of 1990

Effluent Standards for BOD for Strong Industrial

Wastes

Table 3B - Effluent Standards for New* Industries Producing Strong Wastes

and for all Industries Producing Strong Wastes starting January

1, 1995

Maximum Allowable Limits in mg/l Based

on Receiving Body of Water

Industry Classification

Based on BOD of Raw

Wastewater

Inland Waters

(Class C & D)

Coastal Waters

(Class SC & SD)

1. Industries producing

within 3,000 to 10,000

mg BOD/L

130 or 98& removal 200 or 97% removal

2. Industries producing

within 10,000 to

30,000 mg BOD/L

200 or 99% removal 600 or 97% removal

3. Industries producing

more than 30,000 mg

BOD/L

300 or 99% removal 900 or 97% removal

Mixing Zone Requirements

a. No mixing zone or combination of mixing zones shall be

allowed to significantly impair any of the designated uses of

the receiving body of water.

b. A mixing zone shall not include an existing drinking water

supply intake if such mixing zone would significantly impair

the purposes for which the supply is utilized.

c. A mixing zone for rivers, streams, etc., shall not create a

barrier to the free migration of fish and aquatic life.

Mixing Zone Requirements (cont..)

d. A mixing zone shall not include

� nursery area of indigenous aquatic life

� any area designated for shellfish harvesting

� tourist zones and national marine parks and reserves

� coral reef parks and reserves

� declared as such by the appropriate government agency.

e. The length of the mixing zone

� short as possible

� width shall be preferably not more than one-half of the width of

the waterway.

Mixing Zone Requirements (cont..)

f. Hot effluents from power plants and similar generators of large

volume of liquid, mixing zone shall be determined through

modeling

� size

� hydraulic

� hydrological data of the receiving body of water

� the design and siting of the wastewater outfall.

g. Mixing zone must not be used for, or be considered as a substitute

for wastewater treatment facility.

Additional Requirements

a. No effluent shall cause the quality of the receiving body of

water to fall below the prescribed quality in accordance with

its classification or best usage

b. Where the combined effect of individual effluent discharges

causes one or more water quality parameters to exceed the

prescribed limits, the maximum permissible concentrations of

such parameters shall be reduced proportionately so as to

maintain the desired quality

Additional Requirements

c. When discharging effluents into coastal waters, the location

and design of the submarine outfall shall be based

� prevailing oceanographic

� wind conditions

d. Effluents discharged into protected inland and coastal waters

Category II such as Class A, B, and SB shall meet the

requirements of Section 4 and 5.

Additional Requirements (cont…)

e. Starting January 1, 1995, old or existing industries shall

comply with the standards set for new industries (being

implemented).

f. Any existing industry that produces strong wastes which

cannot meet the limits for BOD in Tables 3A and 3B

� May be allowed to operate

� Be issued a temporary permit to operate

� Pays first a penalty fee for polluting RBW

� Five pesos (PhP5.00) per kilogram of BOD discharged

� Calculated fine shall not exceed PhP5,000 per day

Additional Requirements (cont…)

g. Each discharger covered under these regulations shall monitor

� Its effluent

� Its effect on the RBW

Prohibitions

a. No industrial or domestic sewage effluent shall be discharged

into

� Class AA water

� Class SA water

b. No new industrial plant with high waste load potential shall

discharge into a body of water where

� the dilution or assimilative capacity

� during dry weather condition

� insufficient to maintain its prescribed water quality

according to its usage or classification.

Prohibitions

c. No person shall discharge, wholly or partially

� untreated

� inadequately treated industrial effluents

d. Other Restrictions:

1. All water pollution control facilities/installation

� shall be properly and consistently maintained

� correctly and continuously operated

Prohibitions (cont…)

d. Other Restrictions (cont…)

2. No industrial or manufacturing plant shall be operated

� without the control facilities

� wastewater treatment system

� in good order or in proper operation

� except with the permission of the Secretary

3. No industrial/manufacturing plant/source of pollution shall

be operated at

� capacities beyond the limits of operation

� capability of the wastewater treatment facility

Prohibitions (cont…)

d. Other Restrictions (cont…)

4. No person shall

� build, erect, install or use any equipment, contrivance

� any means the use of which will conceal

� and/or dilute an effluent discharge

Maximum Quantity to be Discharged.

1. Secretary shall promulgate guidelines

2. Providing for the maximum quantity

� pollutant

� contaminant

� maximum rate at which the contaminant may be so

discharged.

Penalties.

� Section 9 of the Pollution Control Law (PD 984)

� Sections 106 of the 1978 NPCC Rules and Regulations, as

amended.